Github user shubham-pathak22 commented on a diff in the pull request:
https://github.com/apache/incubator-apex-malhar/pull/137#discussion_r48321356
--- Diff: library/src/main/java/com/datatorrent/lib/parser/Parser.java ---
@@ -61,25 +70,48 @@ public void setup(PortContext context)
}
};
- @OutputPortFieldAnnotation(optional = true)
public transient DefaultOutputPort<INPUT> err = new
DefaultOutputPort<INPUT>();
--- End diff --
Certainly, logs can contain stack trace. But a short error message on error
port along with error tuple would be useful for users to quickly find out
validation errors by connecting to the error port instead of digging into the
logs.
What i suggest, the port should at least have provision to send error
message.
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